moving 2 objects at same time

Question

In my current ios project, I have dedicated one side of the screen to one object and the other side of the screen to the other object and i have made it so that if you swipe your finger across one side of the screen on the designated object would move. However, I want to make it so that you can move both objects at the same time in different movement but i cannot figure out how to do so. Below is my current code.

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint location = [touch locationInView:touch.view];

    if (location.x <= 270 ) {
        [Person setCenter:CGPointMake(location.x, Person.center.y)];

    }
    else  {
        [Person1 setCenter:CGPointMake(location.x, Person1.center.y)];
    }
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint location = [touch locationInView:touch.view];

    if (location.x <= 270 ) {
        [Person setCenter:CGPointMake(location.x, Person.center.y)];
    }
    else  {
        [Person1 setCenter:CGPointMake(location.x, Person1.center.y)];
    }
}

Answer 1

you should start handling multiple touches that are delivered in the touches set - loop through all the UITouch objects and do your handling.

Edit: here's your code:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    for(UITouch *touch in [event allTouches]) {
        CGPoint location = [touch locationInView:touch.view];

        if (location.x <= 270 ) {
            [Person setCenter:CGPointMake(location.x, Person.center.y)];
        }
        else  {
            [Person1 setCenter:CGPointMake(location.x, Person1.center.y)];
        }
    }
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    for(UITouch *touch in [event allTouches]) {
        CGPoint location = [touch locationInView:touch.view];

        if (location.x <= 270 ) {
            [Person setCenter:CGPointMake(location.x, Person.center.y)];
        }
        else  {
            [Person1 setCenter:CGPointMake(location.x, Person1.center.y)];
        }
    }
}